(Security forces) may be besieged.Logical formLearned from41 sentences. A (security operation) can be in place.Logical formLearned from41 sentences. (Security chiefs) may pertain-to a country.Logical formLearned from41 sentences. A security can be in hands of a female.Logical formLearned from41 sentences. A (homeland security adviser) may pertain-to a president.Logical formLearned from41 sentences. Authorities may impose security.Logical formLearned from41 sentences. Security may be tightened in a world-city.Logical formLearned from41 sentences. A male can be worried about security.Logical formLearned from41 sentences. A (security zone) may be occupied by a country.Logical formLearned from41 sentences. A (security zone) may undergo a creation.Logical formLearned from41 sentences. Security may be deployed.Logical formLearned from40 sentences. A (security situation) can be uncertain.Logical formLearned from40 sentences. A security can be guaranteed.Logical formLearned from40 sentences. A (security source) may be quoted as saying.Logical formLearned from40 sentences. (Food security) can be in a country.Logical formLearned from40 sentences.